Leptophilic $Z^{\prime }$ bosons at the FCC-ee: discovery opportunities

Abstract

We examine the possibility to detect new SM-neutral vector bosons ($Z^{\prime }$) that couple exclusively to leptons in the electron-positron mode of the Future Circular Collider (FCC-ee). Focusing on the $Z^{\prime }$ production with a radiated photon search channel, we show that the FCC-ee can significantly extend the unprobed parameter space by increasing the exclusion in the coupling by one to two orders of magnitude in the kinematically allowed mass range (from 10 GeV to 365 GeV), with the leading sensitivity being driven by the muon channel. In doing so, it outperforms other proposed lepton collider options such as CLIC and ILC in this range of masses. Further, we discuss the possibility of improving the sensitivity of the FCC-ee to this model through the modification of the dilepton invariant mass resolution and the photon energy resolution. The impact of systematic uncertainties on the expected sensitivities is also studied.

References in corpus (23)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• MadAnalysis 5, a user-friendly framework for collider phenomenology
• Search for a dark photon in e+e- collisions at BABAR
• LEP Shines Light on Dark Matter
• Designing and recasting LHC analyses with MadAnalysis 5
• The Photon Content of the Proton
• Towards a public analysis database for LHC new physics searches using MadAnalysis 5
• Explaining Dark Matter and $B$ Decay Anomalies with an $L_{\mu }-L_{\tau }$ Model
• Detecting the $L_{\mu }-L_{\tau }$ gauge boson at Belle II
• Search for one large extra dimension with the DELPHI detector at LEP
• Neutrino Mass, Dark Matter and Anomalous Magnetic Moment of Muon in a $U(1{)}_{L_{\mu }-L_{\tau }}$ Model
• Flavour Dependent Gauged Radiative Neutrino Mass Model
• Leptons in the Proton
• Light vector mediators at direct detection experiments
• Searching for Heavy Leptophilic $Z^{\prime }$: from Lepton Colliders to Gravitational Waves
• General Kinetic Mixing in Gauged $U(1{)}_{L_{\mu }-L_{\tau }}$ Model for Muon $g-2$ and Dark Matter
• Probing chiral and flavored $Z^{\prime }$ from cosmic bursts through neutrino interactions
• Simulating hard photon production with WHIZARD
• Sensitivity of future linear $e^{+}{e}^{-}$ colliders to processes of dark matter production with light mediator exchange
• Search for a new Z' gauge boson in $4\mu$ events with the ATLAS experiment
• Dark Z at the International Linear Collider
• Search for a new $Z^{\prime }$ gauge boson via the $pp\to W^{\pm (\ast )}\to Z^{\prime }{\mu }^{\pm }\nu \to {\mu }^{\pm }{\mu }^{\mp }{\mu }^{\pm }\nu$ process in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Searching for the light leptophilic gauge boson $Z_x$ via four-lepton final states at the CEPC

Cited by in corpus (3)

• Searches for the leptophilic Z' boson at the International Linear Collider and Linear Collider Facility
• Phenomenology of Leptophilic Gauge Interactions at Future $e^{+}{e}^{-}$ Colliders
• Constraining the heavy leptophilic neutral gauge bosons through the $Z\to {\ell }^{+}{\ell }^{-}$, $W^{\pm }\to {\ell }^{\pm }{\nu }_{\ell }$, and $h\to {\ell }^{+}{\ell }^{-}$ decays